Past climate changes in Earth's history have been accompanied by very large sea level changes. Physical models aim to describe quantitatively the different physical processes that contribute to sea level rise. Selecting appropriate modeling tool is the main challenge in modeling of Sea Level Rise.
you should follow hydro-dynamic approach along with global GCM and RCMs datasets
That's a huge question. As with any modelling, when you choose your model you need to have some idea of what questions you're trying to answer. Are you interested in timescales of months, years, thousands, 100 000s of years? Total global changes, or local effects? What spatial resolution do you need? Do you want to be able to make future predictions (again over what timescale?) Are you trying to compare to data from altimetry/gravity missions/GPS/tide gauges/salt marshes/corals? Are you interested in thermal-steric effects (expansion of water with rising temperatures), or addition of water due to ice-melt? You might need a model of the ice or land-water storage for this part. What about changes to tides, or storminess? Do you need to know about vertical land movement, geoid changes, glacial rebound, subsidence due to ground-water changes, tectonic movement?
In practice, there isn't - and may never be - a model that can incorporate all of these elements, so you have to break the problem down and tackle it in stages. That's why there's quite a few people working on this!
Dear Setegn
There are a good number of models developed by NOAA. Please visit the following site. That may satisfy you.
http://coast.noaa.gov/digitalcoast/tools/slr
karbassi
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